C. Alexis Gkogkidis

Personal Data

Date & place of birth :

Born 1984 in Karlsruhe, Germany

e-mail :

alexis.gkogkidis(at)uniklinik freiburg.de

Curriculum vitae

Publications

Articles (Peer-Reviewed)

Gkogkidis C.A., Wang X., Schubert T., Gierthmühlen M., Kohler F., Schulze-Bonhage A., Burgard W., Rickert J., Haberstroh J.,Schüttler M., Stieglitz T., Ball T., "Closed-loop interaction with the cerebral cortex using a novel micro-ECoG-based implant: the impact of beta vs. gamma stimulation frequencies on cortico-cortical spectral responses". Brain-Computer Interfaces (2017), https://doi.org/10.1080/2326263X.2017.1381829

Fabian Kohler, C. Alexis Gkogkidis, Christian Bentler, Xi Wang , Mortimer Gierthmuehlen, Joerg Fischer, Christian Stolle, Leonhard M. Reindl, Joern Rickert, Thomas Stieglitz, Tonio Ball, Martin Schuettler, Closed-loop interaction with the cerebral cortex: A Review of wireless implant technology, 2017, Brain-computer Interfaces, 10.1080/2326263X.2017.1338011

Gierthmuehlen, M., Wang, X., Gkogkidis, A., Henle, C., Fischer, J., Fehrenbacher, T., Kohler, F., Raab, M., Mader, I., Kuehn, C., Foerster, K., Haberstroh, J., Freiman, T. M., Stieglitz, T., Rickert, J., Schuettler, M. and Ball, T. (2014), Mapping of sheep sensory cortex with a novel microelectrocorticography grid. J. Comp. Neurol. DOI: 10.1002/cne.23631

Wang, Xi, Alexis Gkogkidis, Olga Iljina, Lukas Fiederer, Chiristian Henle, Irina Mader, Jan Kaminsky, Thomas Stieglitz, Mortimer Gierthmuehlen, and Tonio Ball. 2017. ‘Mapping the Fine Structure of Cortical Activity with Different Micro-ECoG Electrode Array Geometries’. Journal of Neural Engineering. doi:10.1088/1741-2552/aa785e.

Casimo, Kaitlyn, Lila H. Levinson, Stavros Zanos, C. Alexis Gkogkidis, Tonio Ball, Eberhard Fetz, Kurt E. Weaver, und Jeffrey G. Ojemann. 2017. „An Interspecies Comparative Study of Invasive Electrophysiological Functional Connectivity“. Brain and Behavior, November. https://doi.org/10.1002/brb3.863.

Guler, Seyhmus, Moritz Dannhauer, Biel Roig-Solvas, Alexis Gkogkidis, Rob Macleod, Tonio Ball, Jeffrey G. Ojemann, und Dana H. Brooks. 2018. „Computationally optimized ECoG stimulation with local safety constraints“. NeuroImage 173 (Juni): 35–48. https://doi.org/10.1016/j.neuroimage.2018.01.088.

Conference Paper (Peer-Reviewed)

Gkogkidis, C.A., C.Bentler, X.Wang, M.Gierthmuehlen, C.Scheiwe, H.Cristina Schmitz, J.Haberstroh, T.Stieglitz, T. Ball, “Neurophysiological Evaluation of a Customizable μECoG-based Wireless Brain Implant”, 40th International Conference of the IEEE Engineering in Medicine and Biology Society, 2018, 10.1109/EMBC.2018.8513044

Wang, X., Gkogkidis, C.A., Schirrmeister, R., Heilmeyer, F.A., Gierthmuehlen, M., Kohler, F., Schuettler, M., Stieglitz, T., Ball, T., „Deep Learning for micro-Electrocorticograpic (µECoG) Data”, 2018 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECEBS), arXiv preprint arXiv:1810.02584.

Schubert, T., K. Eggensperger, A. Gkogkidis, F. Hutter, T. Ball, and W. Burgard. 2016. ‘Automatic Bone Parameter Estimation for Skeleton Tracking in Optical Motion Capture’. In 2016 IEEE International Conference on Robotics and Automation (ICRA), 5548–54. doi:10.1109/ICRA.2016.7487771.

Schubert T, Gkogkidis A, Ball T, Burgard W. Automatic initialization for skeleton tracking in optical motion capture. 2015 IEEE International Conference on Robotics and Automation (ICRA). 2015. p. 734–9. DOI: 10.1109/ICRA.2015.7139260 

Volk T, Yousaf A, Albesa J, Stocklin S, Hussain S, Gkogkidis CA, Ball T, Reindl LM. Wireless power distribution system for brain implants. Instrumentation and Measurement Technology Conference (I2MTC), 2015 IEEE International. 2015. p. 1249–54. DOI: 10.1109/I2MTC.2015.7151452

Schubert, T., K. Eggensperger, A. Gkogkidis, F. Hutter, T. Ball, and W. Burgard. 2016, "Automatic Bone Parameter Estimation for Skeleton Tracking in Optical Motion Capture". In 2016 IEEE International Conference on Robotics and Automation (ICRA), 5548–54. doi:10.1109/ICRA.2016.7487771.

Conference Poster

Shayestehfard, K., M. Dannhauer, S. Guler, A. Gkogkidis, D. Caldwell, J. Cronin, T. Ball, J. G. Ojemann, R. MacLeod, and D. H. Brooks. 2017. “Modeling and Optimizing Cortical Electric Stimulation.” Brain Stimulation: Basic, Translational, and Clinical Research in Neuromodulation 10 (4): e29. https://doi.org/10.1016/j.brs.2017.04.035.

Dannhauer, M., K. Shayesthefard, S. Guler, D. Caldwell, J. Cronin, C.A. Gkogkidis, R. MacLeod, T. Ball, J. Ojemann, D. Brooks, “OPTISTIM – Combining computational neuroscience and electrophysiology for optimal cortical electric stimulation”, CRCNS (Collaborative Research in Computational Neuroscience) Conference 2016, Paris

Gkogkidis, C.A., M. Dannhauer, S. Guler, R. MacLeod, D. Brooks, J. Ojemann, T. Ball, „OPTISTIM – Combining computational neuroscience with human and ovine electrophysiology for optimizing cortical electric stimulation”, CRCNS (Collaborative Research in Computational Neuroscience) Conference 2016, Paris

Dannhauer, M., A. Gkogkidis, S. Guler, K. Shayestehfard, R. MacLeod, T. Ball, J. Ojemann, and D. Brooks, “OPTISTIM – Combining Computational Neuroscience and Electrophysiology for Optimal Cortical Electric Stimulation” Brain Stimulation: Basic, Translational, and Clinical Research in Neuromodulation 10 (4): e30. https://doi.org/10.1016/j.brs.2017.04.038.

Gkogkidis, C.A., X.Wang, M. Gierthmuehlem, S. Doostkam, M. Schuettler, J.Rickert, J. Haberstroh, T. Stieglitz, W. Burgard, T. Ball, “Signal quality characteristics and histopathological tissue responses in chronic long-term micro-electrocorticographic recordings”, Society for Neuroscience, 2016. Online.

Gkogkidis, A., Wang, X., Gierthmühlen, M., Schüttler, M., Stieglitz, T., Ball, T., “Closed-loop interaction with the cerebral cortex: Exploring the parameter space of µECoG stimulation and read outs”, AREADNE Conference 2016

M. Gierthmuehlen, A. Gkogkidis, S. Doostkam, M. Schuettler, J. Haberstroh, T.Ball, „Functional and histological evaluation of µECoG in sheep“. DGNC 2016.

Gkogkidis, A., Gierthmuehlen, M., Wang, X., Kuehn, C., Rickert, J., Ball, T.; Mapping of auditory evoked responses using high-resolution micro-electrocorticography, Organisation for Human Brain Mapping Annual Meeting 2015, Honolulu, HI, USA, Poster number 1823, online.

M. Gierthmuehlen, A. Gkogkidis, X. Wang, C. Kuehn, M. Schuettler, C. Henle, F. Kohler, J. Haberstroh, K. Foerster, K. Wiebe, T. Wesarg, T. Ball, “High-resolution µECOG-recording of auditory-evoked responses on the core and belt auditory cortex of the sheep”, DGNC 2015.

M. Gierthmuehlen, A. Gkogkidis, X. Wang, T. Wesarg, K. Wiebe, T.M. Freiman, J. Haberstroh, K. Foerster, J. Rickert, M. Schuettler, T. Ball. „Functional organisation of the sheep’s cerebral cortex – where shall we implant our BMI prototypes?”, DGNC 2014.

Wang, X., Gkogkidis, A., Gierthmuehlen, M., Kuehn, C., Henle, C.,  Raab, M., Fischer, J., Kohler, F., Haberstroh, J., Stieglitz, T., Schuettler, M., Rickert, J., Freiman, T., Ball, T.; Acute and Chronic µECoG-based Brain Mapping Using a Wireless Implant System in a Large Animal Model, Program No. 833.07/NN10. 2013 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2013. Online.

Gierthmuehlen, M., Wang, X., Kuehn, C., Gkogkidis, A., Henle, C., Raab, M., Fischer, J., Kohler, F., Haberstroh, J., Stieglitz, T., Schuettler, M., Rickert, J., Ball, T., Freiman, T.; Neurosurgical approach to the cerebral cortex for acute and chronic cortical stimulation and recording studies in minipigs and sheep, Program No. 833.06/NN9. 2013 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2013. Online.

Rickert, J., Kohler, F., Fischer, J., Fehrenbacher, T., Gkogkidis, A., Mohrlok, R., Paetzold, J., Boven, K.-H., Henle, C., Meier, W., Raab, M., Ordonez, J.S., Wang, X., Gierthmuehlen, M., Ball, T., Foerster, K., Haberstroh, J., Freiman, T.M., Stieglitz, T., Schuettler, M.; An implantable brain-computer interface for chronic cortical recording and stimulation using a micro-ECoG electrode array, Program No. 833.17/OO2. 2013 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2013. Online.

Conference Talks

Gkogkidis, C.A., Bentler, C., Wang, X., Scheiwe, C., Cristina Schmitz, H., Stieglitz, T., Ball, T. “Neurophysiological recording and stimulation using an off-the-shelf component wireless brain implant.” Program No. 271.06. 2018 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2018. Online.

Gkogkidis, C.A., C.Bentler, X.Wang, M.Gierthmuehlen, C.Scheiwe, H.Cristina Schmitz, J.Haberstroh, T.Stieglitz, T. Ball, “Neurophysiological Evaluation of a Customizable μECoG-based Wireless Brain Implant”, 40th International Conference of the IEEE Engineering in Medicine and Biology Society, 2018, 10.1109/EMBC.2018.8513044

Gkogkidis C.A., Wang X., Gierthmuehlen M., Haberstroh J., Schuettler M., Rickert J., Stieglitz T., and Ball T., "Cortico-cortical spectral responses elicited by closed-loop stimulation in the sheep somatosensory cortex". 1st Neuroadaptive Technology Conference 2017. (peer-reviewed)

Gkogkidis, C.A., Wang, X., Gierthmuehlen, M., Henle, C., Raab, M., Fischer, J., Kohler, F., Haberstroh, J., Stieglitz, T., Schuettler, M., Rickert, J., Foerster, K., Freiman, T., Ball, T., Cortical Recording and Stimulation Using a Wireless μECoG Implant System in a Large Animal Model. Biomed Tech 2014; 59 (s1) DOI 10.1515/bmt-2014-4468, S1069

“New micro-electrodes in the context of Brain-Machine-Interfaces”, Alexis Gkogkidis & Tonio Ball, 1st International Conference on Image-guided Interventions (IGIC) 2014, Magdeburg, Germany

“Interictal activity in the light of modern signal processing methods”, 8.Esai Valentinssymposium ®, 2014, Berlin, Germany